使用建造者模式可以省去复杂的对象实例华过程。还方便维护。比如后期对象修改了也不用太改大量的代码。需要修改建造者

//建造者模式，目的是消除其它对象复杂的创建过程
/* 描述一个用户的类，包含用户姓名，年龄，金钱 */
class UserInfo {
    protected $userName = ''; 
    protected $userAge = '';
    protected $userMoney = '';
    public function setUserName($userName) {
        $this->userName = $userName;
    }
    public function setUserAge($userAge) {
        $this->userAge = $userAge;
    }
    public function setUserMoney($userMoney) {
        $this->userMoney = $userMoney;
    }
    public function getPeople() {
        echo "这个人的姓名是：" . $this->setUserName . ',年龄是：' . $this->userAge . ', 金钱：' . $this->userMoney;
    }
}
/* 实例化，并且创建这个用户的时候，是很痛苦的，需要设置用户名，年龄和金钱*/
$peopleInfo = array(
    'userName' =  'initphp',
    'userAge' =  28,
    'userMoney' =  '100元'
    );
$UserInfo = new UserInfo;
//下面需要一步步的设置用户信息，才能得到用户详细信息，过程纠结而痛苦
$UserInfo->setUserName($peopleInfo['userName']); 
$UserInfo->setUserAge($peopleInfo['userAge']);
$UserInfo->setUserMoney($peopleInfo['userMoney']);
$UserInfo->getPeople();

//UserInfoBuilder 用户信息建造者类，将UserInfo的创建过程封装掉，开发者使用起来心情舒畅
<?php
//建造者模式，目的是消除其它对象复杂的创建过程
include("UserInfo.php");
class UserInfoBuilder {
    protected $obj;
    public function __construct() {
        $this->obj = new UserInfo;
    }
    public function buildPeople($peopleInfo) {
        $this->obj->setUserName($peopleInfo['userName']);
        $this->obj->setUserAge($peopleInfo['userAge']);
        $this->obj->setUserMoney($peopleInfo['userMoney']);
    } 
    public function getPeople() {
        $this->obj->getPeople();
    }
}
/* 创建过程被封装了，用户使用简单了 */
$peopleInfo = array(
    'userName' =  'initphp',
    'userAge' =  28,
    'userMoney' =  '100元'
    );
$UserInfoBuilder = new UserInfoBuilder;
$UserInfoBuilder->buildPeople($peopleInfo); //直接一个build
$UserInfoBuilder->getPeople();

文章来源于： https://cloud.tencent.com/developer/article/1723155